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| Preparation and properties of porous nickel by space-holder-method |
| WANG Hongwei1，LI Yonghua1，ZHENG Qingsong1，CHEN Xiaolong1，2 |
| （1.Shangi Institute For Advanced Materials（Nanjing）CO., LTD. Nanjing Jiangsu 210046. China； 2. Nanjing
Tech University Nanjing Jiangsu 211816. China） |
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Abstract Porous nickel with high porosity and small pore was fabricated by powder metallurgy which was called
space-holder-method and adding sodium chloride（NaCl）. The pore structures and mechanical properties were
examined. The results show that by Adjusting the proportion of space-holder, sintering temperature and cooling
time, porosity of sample was 60.84%~64.92%, the mean pore size was 0.20-8.80 μm with the proportion of over 20
μm occupying 92.0%~96.1%, compressive strength was 8.9-13.4 MPa. The mean pore size decreases correspondingly
with increase of cooling time, but the compressive strength take on the trend of increase.
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Received: 08 March 2022
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Corresponding Authors:
李永华（1985—），男，博士，高级工程师，主要研究方向为金属粉末制备技术及钛合金近净成形技术。
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2023, Vol. 33 
