Abstract

The sintering of cubic boron nitride (cBN) based ceramic matrix materials with zirconium carbide and aluminum has been carried out under high pressures and temperatures. The performed study has revealed that the interaction between mixture components with the formation of a new phase, namely, zirconium diboride (ZrB₂) occurs at sintering temperatures above 1750°C and an applied pressure of 7.7 GPa. A further increase in the sintering temperature leads to a growth in the volume ZrB₂ content and reduces the microhardness and crack toughness of the studied materials. The flank wear of specimens under the conditions used for the processing of AISI316L stainless steel (v_c = 300 m/min, t = 300 s) grows with an increase in the sintering temperature to attain the critical value VB = 325 µm, when the specimen sintered at temperature of 2300°C is used, and VB = 200 µm for the specimen sintered at 1750°C.

中文翻译：

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ZrC和Al在高温高压下烧结BN基复合材料。

摘要

立方氮化硼（cBN）基陶瓷基体材料与碳化锆和铝的烧结已在高压和高温下进行。进行的研究表明，混合物组分之间的相互作用与新相即二硼化锆（ZrB ₂）的形成发生在高于1750°C的烧结温度和7.7 GPa的施加压力下。烧结温度的进一步升高导致体积ZrB ₂含量的增加，并且降低了所研究材料的显微硬度和裂纹韧性。在AISI316L不锈钢加工条件下（v _c = 300 m / min，t当使用在2300°C的温度下烧结的样品时，随着烧结温度的升高，= 300 s）达到临界值VB = 325 µm，对于在1750°C烧结的样品，VB = 200 µm。