Contribution of electrospark alloying to the oxidation resistance of hard tungsten alloys

被引：7
|
作者：
Verkhoturov, A. D. [1 ]
Shpilev, A. M.
Gordienko, P. S. [2 ]
Konevtsov, L. A. [1 ]
Panin, E. S. [2 ]
Podchernyaeva, I. A. [3 ]
Panasyuk, A. D. [3 ]
机构：
[1] Russian Acad Sci, Khabarovsk Sci Ctr, Inst Mat Sci, Far Eastern Dept, Khabarovsk, Russia
[2] Russian Acad Sci, Khabarovsk Sci Ctr, Inst Mat Sci, Far Eastern Dept, Vladivostok 690022, Russia
[3] Natl Acad Sci Ukraine, Inst Problems Mat Sci, Kiev, Ukraine
来源：
POWDER METALLURGY AND METAL CERAMICS | 2008年 / 47卷 / 1-2期
关键词：
hard tungsten alloys; carbides; electron structure; oxidation resistance; oxidation; electrospark alloying; ceramics;
D O I：
10.1007/s11106-008-0015-2
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 examines the contribution of electrospark alloying to the oxidation resistance of hard tungsten alloys. It is established that the oxidation of carbides results from their electronic structure. When WC and hard tungsten alloys are heated to 1000 degrees C, a brittle scale consisting of WO(3) and CoWO(4) rapidly forms. The oxidation resistance reduces as follows: TiC -> Co -> W -> HTA (if TiC is more than 10%)-> WC-Co -> WC. The oxidation rate of hard tungsten alloys may be a criterion of their serviceability. It is shown that the oxidation resistance of hard tungsten alloys becomes much higher after their electrospark alloying with aluminum, titanium, and chromium and with wear-resistant composite TsLAB-2 ceramics based on the ZrB(2)-ZrSi(2)-LaB(6) system with Ni-Cr-Al (30 mole%) binder.
引用
收藏
页码：112 / 115
页数：4
相关论文
共 50 条
  • [1] Contribution of electrospark alloying to the oxidation resistance of hard tungsten alloys
    A. D. Verkhoturov
    A. M. Shpilev
    P. S. Gordienko
    L. A. Konevtsov
    E. S. Panin
    I. A. Podchernyaeva
    A. D. Panasyuk
    Powder Metallurgy and Metal Ceramics, 2008, 47 : 112 - 115
  • [2] Effect of electrospark alloying a tungsten hard alloy on its wear and corrosion resistance
    I. A. Podchernyaeva
    A. D. Panasyuk
    V. A. Lavrenko
    A. I. Yuga
    V. I. Berezanskaya
    Powder Metallurgy and Metal Ceramics, 1999, 38 : 250 - 253
  • [3] The formation of protective coatings on tungsten-containing hard alloys by electrospark alloying with metals and borides
    Verkhoturov A.D.
    Gordienko P.S.
    Podchernyaeva I.A.
    Konevtsov L.A.
    Panin E.S.
    Inorganic Materials: Applied Research, 2011, 2 (02) : 180 - 185
  • [4] Electrospark alloying of the titanium alloy VT6 with tungsten-free hard alloys
    Podchernyaeva, IA
    Lavrenko, VA
    Berezanskaya, VI
    Smirnov, VP
    POWDER METALLURGY AND METAL CERAMICS, 1996, 35 (11-12) : 588 - 591
  • [5] Refractory and ceramics materials - Effect of electrospark alloying a tungsten hard alloy on its wear and corrosion resistance
    Podchernyaeva, IA
    Panasyuk, AD
    Lavrenko, VA
    Yuga, AI
    Berezanskaya, VI
    POWDER METALLURGY AND METAL CERAMICS, 1999, 38 (5-6) : 250 - 253
  • [6] Electrospark alloying VT6 titanium alloy by tungstenless hard alloys
    Podchernyaeva, I.A.
    Lavrenko, V.A.
    Berezanskaya, V.I.
    Smirnov, V.P.
    Poroshkovaya Metallurgiya, 1996, (11-12): : 15 - 19
  • [7] The effect of mass transfer between electrodes in the electrospark alloying process of titanium alloys with hard materials
    Korkmaz, K.
    Ribalko, A. V.
    Sahin, O.
    KOVOVE MATERIALY-METALLIC MATERIALS, 2013, 51 (05): : 283 - 289
  • [8] Improvement of Ti heat resistance by electrospark alloying
    Vdovin, S.F.
    Zashchita Metallov, 1993, 29 (03): : 505 - 508
  • [9] OPTIMAL CHARACTERISTICS OF ELECTROSPARK ALLOYING WITH EUTECTIC ELECTRODE ALLOYS
    GOLUBETS, VM
    PASHECHKO, MI
    GASII, OB
    SOVIET MATERIALS SCIENCE, 1992, 27 (06): : 601 - 603
  • [10] A modern representation of the behaviour of electrospark alloying of steel by hard alloy
    Ribalko, Alexander V.
    Sahin, Orhan
    SURFACE & COATINGS TECHNOLOGY, 2006, 201 (3-4): : 1724 - 1730
12345