Research output: Contribution to journal › Article › peer-review
Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - Properties of diffusion aluminium-zirconium coatings with microadditions
AU - Veksler, Yu. G.
AU - Kopylov, A. A.
AU - Kuznetsov, V. P.
AU - Lesnikov, V. P.
PY - 1991
Y1 - 1991
N2 - The possibility of production of aluminium-zirconium coatings on nickel and cobalt substrata by means of circulatory gas method was shown. The properties of these coatings were estimated. Samples of nickel corrosion - resistant ChN58KVTYuMB, ChN58KVTYuMBR alloys and low-chromium Zh6F alloy were used as substrata, on which in some experiments sublayer of Co-Cr-Al-Y or Ni-Cr-Al-Y was preliminary coated. Circulatory method was chosen for the possibility to realize the control of growth stage of aluminide and zirconium coating layers. Chemicothermal treatment was conducted at 950-1000° C in 3-6h in dependence on required coating thickness and its structural compositions. Then combined annealing in vacuum and in the air was carried out in the range 750-1050° C during 4h. Coatings obtained as compared to simple aluminide ones, possess high corrosion and thermal-cyclic and heat resistances and ensure growth of fatigue resistance. Microadditions of lanthanum permit to receive the greatest effect in stabilization of β-phase and tetragonal ZrO2 modification.
AB - The possibility of production of aluminium-zirconium coatings on nickel and cobalt substrata by means of circulatory gas method was shown. The properties of these coatings were estimated. Samples of nickel corrosion - resistant ChN58KVTYuMB, ChN58KVTYuMBR alloys and low-chromium Zh6F alloy were used as substrata, on which in some experiments sublayer of Co-Cr-Al-Y or Ni-Cr-Al-Y was preliminary coated. Circulatory method was chosen for the possibility to realize the control of growth stage of aluminide and zirconium coating layers. Chemicothermal treatment was conducted at 950-1000° C in 3-6h in dependence on required coating thickness and its structural compositions. Then combined annealing in vacuum and in the air was carried out in the range 750-1050° C during 4h. Coatings obtained as compared to simple aluminide ones, possess high corrosion and thermal-cyclic and heat resistances and ensure growth of fatigue resistance. Microadditions of lanthanum permit to receive the greatest effect in stabilization of β-phase and tetragonal ZrO2 modification.
UR - http://www.scopus.com/inward/record.url?partnerID=8YFLogxK&scp=0026208492
M3 - Статья
SP - 44
EP - 46
JO - Metallovedenie i Termicheskaya Obrabotka Metallov
JF - Metallovedenie i Termicheskaya Obrabotka Metallov
SN - 0026-0819
IS - 8
ER -
ID: 55014556