Cubic boron nitride compact

A nitride and carbonitride technology, used in the manufacture of tools, toolholder accessories, turning equipment, etc., can solve problems such as aggravation, limited tool life, and tool failure.
CN101084170AActive Publication Date: 2007-12-05ELEMENT SIX ABRASIVES
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ELEMENT SIX ABRASIVES
Publication Date
2007-12-05
Patent Text Reader

Abstract

The present invention relates to CBN briquetting which contains CBN and matrix phase, the matrix phase combines with a second horniness phase and maximum titanium diboride, thereinto, the second horniness phase is selected from TiCN, TiC, TiN or its mixture and solid solution, the XRD peak height of thetitanium diboride peak (101)(after back ground emendation) is below 12 percent of the CBN peak (111) height.
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Description

Background of the invention

[0001] The present invention relates to compositions for making cubic boron nitride abrasive compacts, and in particular to compacts having enhanced wear resistance and enhanced chipping resistance.

[0002] Boron nitride generally exists in three crystal forms, namely cubic boron nitride (CBN), hexagonal boron nitride (hBN) and wurtzitic cubic boron nitride (wBN). Cubic boron nitride is a hard sphalerite form of boron nitride that is structurally similar to diamond. In the CBN structure, the bonds formed between atoms are strong, mainly covalent tetrahedral bonds. Methods of preparing CBN are well known in the art. One approach is to subject hBN to extremely high pressure and temperature in the presence of specific catalytic additive materials, which may include alkali metals, alkaline earth metals, lead, tin, and nitrides of these metals. When the temperature and pressure are reduced, CBN can be recovered.

[0003] CBN has a wide range of comm...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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