Effect of electrospark alloying on the wear resistance of cutting inserts made of VK8 alloy

被引：2

作者：

Stepanova, O. V. ^{[1
]}

Podchernyaeva, I. A. ^{[1
]}

Panasyuk, A. D. ^{[1
]}

Uvarova, I. V. ^{[1
]}

Timofeeva, A. A. ^{[1
]}

Rogozinskaya, A. A. ^{[1
]}

机构：

[1] Natl Acad Sci Ukraine, Inst Problems Mat Sci, Kiev, Ukraine

来源：

POWDER METALLURGY AND METAL CERAMICS | 2007年 / 46卷 / 11-12期

关键词：

hard alloy; electrospark alloying; x-ray phase analysis; wear resistance; cutting face;

D O I：

10.1007/s11106-007-0083-8

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The paper presents the results from x-ray phase analysis and wear-resistance tests (discontinuous cutting) of cutting inserts made of VK8 (WC-8% Co) hard alloy. The inserts have an electrospark-deposited coating based on the AlN-Ti/ZrB2 system with Ti/ZrSi2 additions and the TiN-AlN system. These results allow one to infer the possible causes of different wear resistance of cutting inserts with electrospark-deposited coatings. Among such causes are intensive oxidation of titanium (unlike zirconium) during electrospark alloying followed by the formation of brittle oxide phases and the shielding effect of ZrO2 (it prevents globules from destruction during both alloying and service).

引用

页码：539 / 542

页数：4

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