电镀稀土铬提高水轮机的抗空蚀磨损能力

中国腐蚀与防护学报

2003, Vol. 23

Issue (1): 34-37

研究报告

本期目录 | 过刊浏览

电镀稀土铬提高水轮机的抗空蚀磨损能力

王飚;王宇林;张自华

PLATING RARE EARTH CHROMIUM ON HYDRAULIC TURBINE'S SUBSTRATES TO IMPROVE RESISTANCE TO CAVITATION EROSION AND ABRASION

Biao Wang;Yulin Wang;Zihua Zhang

全文: PDF(153 KB)

摘要: 在不锈钢水轮机母材上，用周期反相电镀稀土铬，镀层厚度约03 mm，镀层由金属基相和稀土盐颗粒第二相组成，硬度为900 Hv～1000 Hv.阳极极化曲线测量表明：镀层的腐蚀阻力为母材的7～8倍.在模拟式小水轮机上考核，镀层的抗磨蚀性为母材的25～28倍，为离子氮化不锈钢的10～12倍.在水电生产中应用，电镀水轮机的工作寿命比原不锈钢高2～6倍.

关键词 ：水轮机, 空蚀磨损, 电镀, 稀土铬

Abstract：Plating rare earth chromium on stainless steel appl ied in hydraulic turbine,by means of the operation converting electrodes periodi cally,was carried out.The plating layer consists of metallic matrix and second p hase particles of rare earth sulphates or carbonates,its thickness is about 0.3m m,its microhardness is from Hv900 to 1000.The results of anodic polarization cur ves indicate that the corrosive resistance of plating layer is 7～8 times to tha t of stainless steel substrates.When an imitating small hydraulic turbine made u p of different materials was rotated in the slurry of 60% water and 40% sands,th e resistance of plating layer to cavitation erosion and abrasion is about 28 tim es to that of stainless steel,and is 10～12 times to that of plasma-nitrided sta inless steel.The results of hydraulic electricity generation indicate the servic e life of plated hydraulic turbine is 3～6 times to that of stainless steel hydr aulic turbine.

Key words： hydraulic turbine cavitation erosion and abrasion plating rare earth chromium

收稿日期: 2002-07-12

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引用本文:

王飚; 王宇林; 张自华 . 电镀稀土铬提高水轮机的抗空蚀磨损能力[J]. 中国腐蚀与防护学报, 2003, 23(1): 34-37 .
Biao Wang, Yulin Wang, Zihua Zhang. PLATING RARE EARTH CHROMIUM ON HYDRAULIC TURBINE'S SUBSTRATES TO IMPROVE RESISTANCE TO CAVITATION EROSION AND ABRASION. J Chin Soc Corr Pro, 2003, 23(1): 34-37 .

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https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y2003/V23/I1/34

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