摘要:
A diamond joined body is a diamond joined body including a hard substrate and a polycrystalline diamond layer arranged on the hard substrate, wherein an area ratio of carbon grains in a region of the hard substrate is less than 0.03%, the region being a region enclosed by an interface between the hard substrate and the polycrystalline diamond layer and an imaginary line x in a cross section parallel to a normal direction of the interface, the imaginary line x being parallel to the interface on the hard substrate side and having a distance of 500 μm from the interface.
摘要:
A manufacturing method of a diamond porous grinding block based on 3D printing. The manufacturing method includes designing a 3D printing model of a grinding block unit cell with an adjustable porosity according to an internal cooling space for abrasive debris required in a grinding process, importing the 3D printing model of the grinding block unit cell into a MAGICS software, filling a frame of a 3D printing model of a diamond porous grinding block with a plurality of 3D printing models of grinding block unit cells; preparing mixed powder of diamond abrasive particles and an aluminum alloy binder as printing powder, performing 3D printing to the 3D printing model of the diamond porous grinding block by an SLM technology to obtain the diamond porous grinding block. The diamond porous grinding block is configured to form a diamond structure grinding disc for grinding a semiconductor substrate.
摘要:
A diamond sintered material includes diamond grains, wherein a content ratio of the diamond grains is more than or equal to 80 volume % and less than or equal to 99 volume % with respect to the diamond sintered material, an average grain size of the diamond grains is more than or equal to 0.1 μm and less than or equal to 50 μm, and a dislocation density of the diamond grains is more than or equal to 8.1×1013 m−2 and less than 1.0×1016 m−2.
摘要:
A method of forming a polycrystalline diamond cutting element includes assembling a diamond material, a substrate, and a source of catalyst material or infiltrant material distinct from the substrate, the source of catalyst material or infiltrant material being adjacent to the diamond material to form an assembly. The substrate includes an attachment material including a refractory metal. The assembly is subjected to a first high-pressure/high temperature condition to cause the catalyst material or infiltrant material to melt and infiltrate into the diamond material and subjected to a second high-pressure/high temperature condition to cause the attachment material to melt and infiltrate a portion of the infiltrated diamond material to bond the infiltrated diamond material to the substrate.
摘要:
Methods of forming larger sintered compacts of PCD and other sintered ultrahard materials are disclosed. Improved solvent metal compositions and layering of the un-sintered construct allow for sintering of thicker and larger high quality sintered compacts. Jewelry may also be made from sintered ultrahard materials including diamond, carbides, and boron nitrides. Increased biocompatibility is achieved through use of a sintering metal containing tin. Methods of sintering perform shapes are provided.
摘要:
Provided are a diamond composite material which is excellent in thermal conductivity, suitable as a material for a heat radiating member, and dense, the heat radiating member, and a method for producing a diamond composite material that can productively produce a diamond composite material which is excellent in wettability between diamond and metal and dense. The diamond composite material includes: a coated diamond particle including a diamond particle and a carbide layer covering a surface of the diamond particle and including an element of group 4 of the periodic table; and silver or a silver alloy binding such coated diamond particles together, with an oxygen content of 0.1 mass % or less.
摘要:
Methods of forming a polycrystalline compact using at least one metal salt as a sintering aid. Such methods may include forming a mixture of the at least one metal salt and a plurality of grains of hard material and sintering the mixture to form a hard polycrystalline material. During sintering, the metal salt may melt or react with another compound to form a liquid that acts as a lubricant to promote rearrangement and packing of the grains of hard material. The metal salt may, thus, enable formation of hard polycrystalline material having increased density, abrasion resistance, or strength. The metal salt may also act as a getter to remove impurities (e.g., catalyst material) during sintering. The methods may also be employed to faun cutting elements and earth-boring tools.
摘要:
An abrasive particle can include a body including abrasive particles contained in a bond matrix. The bond matrix can include a first phase and a second phase. In an embodiment, the body can have a Microstructure Feature of greater than 1 and a Non-Bond Value of not greater than 50%. In another embodiment, the body can include a Microstructure Feature including a Spacing Value of at least 0.01.
摘要:
A cutting element comprises a supporting substrate, a cutting table comprising a hard material attached to the supporting substrate, and a fluid flow pathway extending through the supporting substrate and the cutting table. The fluid flow pathway is configured to direct fluid delivered to an outermost boundary of the supporting substrate through internal regions of the supporting substrate and the cutting table. A method of forming a cutting element and an earth-boring tool are also described.