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research on the interface of infiltration brazed tungsten

research on the interface of infiltration brazed tungsten

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Author Jian Wu Yan,Pei Pei Li,Qing Cao,Ying Liu,Quan Guo Lu,Qing Hua CaoPublish Year 2010Research on the process of infiltration brazed tungsten

Research on the process of infiltration brazed tungsten carbide composite and wear-erode resistance cladding Abstract Flexible composite pre-cladding of tungsten carbide,nickel,chromium (WC-Ni-Cr) are shaped with mixer and roller and then be sticked on the Q235 steel substrate.Author Jian-wu Yan,A-fang Peng,Quanguo Lu,Min-bin Jiang,Ying Liu,Cao QinghuaPublish Year 2010FABRICATION AND CHARACTERIZATION OF BRAZEDmetal brazing of silicon carbide (CVD -SiC,1.1 mm thick,and hot-pressed -SiC,3 mm thick) to the refractory metals molybdenum and tungsten using active braze alloys was studied.The joint microstructure,composition,and microhardness were evaluated by optical microscopy (OM),scanning electron microscopy (SEM),energy dispersive

Brazing Behaviour of Ag-Cu Filler Materials IntechOpen

Nov 16,2016·Currently,there are several types of fillers for brazing tungsten carbide with steel,classified into two main groups.The first group contains steel and steel alloys,including Cu-Zn (special brazing alloys) and Cu-Zn-Ni alloys.The first types of brazing alloys for tungsten carbide were those containing 100% Cu or 60% Cu + 40% Zn.Cemented Tungsten Carbide/Carbon Steel Joint BrazedThe solid-liquid interface phenomena in cemented tungsten carbide (WC-6% Co) /carbon steel (0.11%,0.47%and 0.85%C) joints brazed with steel filler metal and the shear strength of the joints have been studied.In steel brazing of cemented carbide to carbon steel,the carbon steel dissolves into molten steel filler metal and,simultaneously Corrosion resistance of tungsten carbide-based cermet Jan 01,2014·His research interests are tungsten carbide vacuum brazing and its material properties evaluation and analysis.Da Quan Zhang is a Professor in Department of Environmental Engineering,Shanghai University of Electric Power,China,the Director of Shanghai leading academic discipline of electric power chemistry and environment protection.

Design,Fabrication and Testing of Porous Tungsten

tungsten element,welded into a holder and heated by an external heater that is brazed to the holder (fig.I).This paper will only discuss the porous .tungsten material,the design and fabrication of the porous tungsten welded than the vapor side because it controls the liquid vapor interface.If aEP1015182A4 - Brazed diamond tools by infiltration The present invention describes a diamond tool (10) with diamond bonded chemically by a braze (28) that contains either Cr,Mn,Si,or Al or mixtures or alloys thereof.The diamond tool (10) is made by infiltrating the braze (28) into a matrix metal (24) that contains diamond (20) in either form of grits or polycrystalline bodies.EP1015182A4 - Brazed diamond tools by infiltration The present invention describes a diamond tool (10) with diamond bonded chemically by a braze (28) that contains either Cr,Mn,Si,or Al or mixtures or alloys thereof.The diamond tool (10) is made by infiltrating the braze (28) into a matrix metal (24) that contains diamond (20) in either form of grits or polycrystalline bodies.

EROSION RESISTANCE OF INFILTRATION BRAZED TUNGSTEN

Translate this pageInfiltration brazed tungsten carbide wear protection,as an alternative to weld overlay,has been shown to be superior in pulp and paper mill applications,where severe erosion,corrosion and abrasion are the primary mechanisms of failure.A materials erosion resistance is determined by several factors,including the size and spacing of the materials hard particles and the method of Effect of Ti on Microstructure and Properties of Tungsten In this paper,scanning electron microscopy (SEM),energy dispersive spectroscopy (EDS) and X-ray diffractometer (XRD) were used to comprehensively analyze the microstructure and brazing performance of a CuAgTi filler metal with braze tungsten heavy alloys.The association of microstructure,wettability and shear strength of brazing joints was also investigated.Effect of Ti on Microstructure and Properties of Tungsten J.de Prado et al.studied Fe-Ti filler metal for W-W brazing joint which brazed in a high vacuum furnace at 1350 °C for 10 min,the shear strength of the joints is 94 ± 23 MPa,and failure during testing is always located at the tungsten-braze interface,because no further reactions or interactions were observed at the W-braze interface .

Effect of Ti on Microstructure and Properties of Tungsten

J.de Prado et al.studied Fe-Ti filler metal for W-W brazing joint which brazed in a high vacuum furnace at 1350 °C for 10 min,the shear strength of the joints is 94 ± 23 MPa,and failure during testing is always located at the tungsten-braze interface,because no further reactions or interactions were observed at the W-braze interface .Elevated-temperature tensile properties of alloyed Lewis Research Center made to determine the types of reactions occurring at the matrix-fiber interface.The mechanical properties of the steel alloy-tungsten fiber composites studied were re infiltration of the tungsten wires,the ceramic tube was placed in a closed-end quartzExperimental Investigation on Nanoprocessing of Stainless Research on the Interface of Infiltration Brazed Tungsten Carbide Composite Cladding p.1004 Copper Plating on SUS 304 Plate from Acid Bath

FABRICATION AND CHARACTERIZATION OF BRAZED

metal brazing of silicon carbide (CVD -SiC,1.1 mm thick,and hot-pressed -SiC,3 mm thick) to the refractory metals molybdenum and tungsten using active braze alloys was studied.The joint microstructure,composition,and microhardness were evaluated by optical microscopy (OM),scanning electron microscopy (SEM),energy dispersiveHealth Hazard Evaluation Report 1981-0212-1169infiltration process in which diamond,tungsten,and tungsten carbide-cobalt powders are packed into graphite molds.Then a steel,zinc,nickel alloy is melted on top of the mold and infiltrates the packed powders.Upon cooling,a diamond impregnated composite body results which is used as a bit segment for concrete core drills.Infiltration Alloys - Belmont MetalsInfiltration Alloys Featuring Copper-based Binder Alloys enhanced with Nickel for Geothermal,Mining,Oil Gas,Water Well drilling and horizontal applications.Our Copper Binder is an integral part of bits that are cast into a bit body with tungsten carbide matrix powder.

Interfacial microstructure and mechanical properties of

Sep 18,2020·The average shear strength was 93 ± 23 MPa,and fracture occurred at the W-braze interface .For tungsten based powder alloys,the high temperature performance of the joint is a problem that cannot be ignored,and the active element V has excellent high temperature and oxidation resistance [,,,].W.W.Basuki et al.reported that the W and Optimization of Process Parameters for the Manufacturing Process parameters play a crucial role in the final characteristics and properties of every product.The current work focuses mainly on improving the vacuum furnace brazing process for tungsten carbide reinforced Ni-based alloy (NiCrBSi) metallic composite coatings,by establishing the best set of parameters adapted to this specific chemical composition.Previous123456NextVACUUM BRAZING OF DIAMOND TO TUNGSTENVACUUM BRAZING OF DIAMOND TO TUNGSTEN CARBIDE Zhiyong Yin SEM/EDS analysis revealed that the chemical changes at the interface between the braze alloy and diamond substrate were in agreement with the intermetallic solidification and Dr.Gagan Saini for their contributions to this research and thesis.

Research on the Interface of Infiltration Brazed Tungsten

Download Citation Research on the Interface of Infiltration Brazed Tungsten Carbide Composite Cladding WC-Ni-Cr composite cladding is fabricated on the Q235 steel by infiltration brazed in a Research on the Interface of Infiltration Brazed Tungsten WC-Ni-Cr composite cladding is fabricated on the Q235 steel by infiltration brazed in a vacuum furnace.Microstructure of interface and welding specimen's longitudinal section of alloy coating are investigated by CMM-88E metallographic microscope and FEI Quanta200 scanning electron microscope.Element diffusion and distribution along the longitudinal section are tested by the Energy Disperse Research on the process of infiltration brazed tungsten BNi-2 and BNi-7 are appropriate brazing-solder for infiltration brazed of WC-Ni-Cr composite cladding that form a metallurgy interface with Q235 steel substance.Discover the world's research 19

Residual Stress Generation in Brazed Tungsten

The edge of the tungsten away from the braze interface is at position 0mm,the braze layer at 25mm and the opposite edge of the steel at 50mm.High tensile axial residual stresses are found in the tungsten near the braze interface.The magnitude of the stress increases with proximity to the braze layer,with a maximum of about 1000 MPa.Residual Stress Generation in Tungsten-Copper BrazedResidual Stress Generation in Tungsten-Copper Brazed Joint Using Brazing Alloy D.Easton 1,J.Wood ,S.Rahimi2,A.Galloway1,Y.Zhang ,C.Hardie3 1 Mechanical and Aerospace Engineering,University of Strathclyde,Glasgow,United Kingdom 2Advanced Forming Research Centre,University of Strathclyde,Glasgow,United Kingdom 3Material Research Laboratory,Culham Centre for FusionResidual stress generations in brazed tungsten dissimilar Understanding the residual stress state in brazed joints is crucial for the operational design and lifetime performance of the part in service.High-magnitude residual stresses are expected in the joined materials following cooling from brazing temperatures (950 °C) due to large mismatches in the thermal and mechanical properties.This paper aims at further understanding of the residual

STUDIES ON HIGH TEMPERATURE VACUUM BRAZING

The thickness of the brazed seam is measured to be approx.17 µm.(d) In W-AMS 4777-W joint sample,diffusion of brazing filler is seen on both the parent materials.The thickness of the brazed seam measured to be approx.10 µm.Non-uniform distributions of the brazing filler is observed at the interfaceSTUDIES ON HIGH TEMPERATURE VACUUM BRAZINGThe thickness of the brazed seam is measured to be approx.17 µm.(d) In W-AMS 4777-W joint sample,diffusion of brazing filler is seen on both the parent materials.The thickness of the brazed seam measured to be approx.10 µm.Non-uniform distributions of the brazing filler is observed at the interfaceSome results are removed in response to a notice of local law requirement.For more information,please see here.12345NextBrazing of tungsten based alloy/superalloy GH907 with lean Feb 01,2021·The brazed joint was composed of three zones diffusion layer formed adjacent to tungsten based alloy was marked as I; middle layer consisted of -C u and -A g was marked as II; Cu-rich layer infiltrating into the grain boundary of GH907 was marked as III.From the enlarged view of W alloy/filler interface,an obvious diffusion layer could

Tests on High-Velocity Forming of AZ31 Magnesium Alloy by

Research on the Interface of Infiltration Brazed Tungsten Carbide Composite Cladding p.1004 Copper Plating on SUS 304 Plate from Acid BathTungsten Carbide Extends Life of ID Fan Blades Power Nov 01,2003·The materials tested included infiltration brazed tungsten carbide cladding,tungsten carbide high velocity Oxy-Fuel (HVOF),tungsten carbide plasma sprayTungsten Fiber Reinforced Copper - NASATungsten fiber reinforced steel matrix composites served as an ideal model system to analyze the behavior of metal matrix composites because the two components--tungsten wire and steel matrix--were mutually insoluble in each other,were readily available at low cost,and were easily fabricated into composites by liquid infiltration.

Tungsten Fiber Reinforced Copper

Tungsten fiber reinforced steel matrix composites served as an ideal model system to analyze the behavior of metal matrix composites because the two components--tungsten wire and steel matrix--were mutually insoluble in each other,were readily available at low cost,and were easily fabricated into composites by liquid infiltration.Tungsten-Based Composites for Nuclear Fusion Applications Oct 01,2015·This chapter provides a comprehensive knowledge about the potential role of tungsten-based composites in fusion reactors and the research work which has been done in this very important area of nuclear materials.The characteristics of tungsten,which make it the most potential candidate for plasma-facing applications,have been presented along with the shortcomings in pure tungsten.Tungsten-Based Composites for Nuclear Fusion Applications Oct 01,2015·This chapter provides a comprehensive knowledge about the potential role of tungsten-based composites in fusion reactors and the research work which has been done in this very important area of nuclear materials.The characteristics of tungsten,which make it the most potential candidate for plasma-facing applications,have been presented along with the shortcomings in pure tungsten.

US Patent for Brazed diamond tools by infiltration Patent

On the other hand,if the braze material contains a less sensitive getter,such as chromium and manganese,a lower degree of vacuum (10.sup.-5 torr minimum) or a hydrogen atmosphere may be adequate for the infiltration.After the infiltration,the produced part (e.g.,a saw segment) may be trimmed (e.g.,by grinding) to the finished dimension.US6039641A - Brazed diamond tools by infiltration -The diamond tool is made by infiltrating the braze into a matrix metal that contains diamond in either form of grits or polycrystalline bodies.US6039641A - Brazed diamond tools by infiltration - Google Patents Brazed diamond tools by infiltration Download PDF Info Publication number US6039641A.US6039641A US6039641A - Brazed diamond tools by infiltration -The diamond tool is made by infiltrating the braze into a matrix metal that contains diamond in either form of grits or polycrystalline bodies.US6039641A - Brazed diamond tools by infiltration - Google Patents Brazed diamond tools by infiltration Download PDF Info Publication number US6039641A.US6039641A


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