کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7004319 | 1454977 | 2015 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of residual porosity on the dry and lubricated sliding wear of a powder metallurgy austenitic stainless steel
ترجمه فارسی عنوان
تأثیر تخلخل باقی مانده در خشک شدن و روانکاری کششی فولاد ضد زنگ آستنیتی متالورژی پودر
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کلمات کلیدی
سایش کشویی، فولاد، تست بپوشید مکانیک تماس
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
شیمی کلوئیدی و سطحی
چکیده انگلیسی
Powder metallurgy practices offer the opportunity to control the porosity of steels for tribology applications. The material of interest was an austenitic powder metallurgy stainless steel sintered in a nitrogen atmosphere. Four disc samples with increasing porosity (from 8% to 29%) were subjected to dry and lubricated sliding against an alumina pin using a rotary pin-on-disc tribometer. An estimation based on Hertzian contact analysis has been introduced to define the size of large pores. A normalized scar depth has been defined. The influence of pores on Archard׳s wear law has been analysed. Dry sliding, liquid lubrication, and self-lubrication (filled pores) were all evaluated. During the first few metres of dry sliding, the pores are closed by plastic deformation. After that, the wear rate can be considered the same. In lubricated conditions, pores are not closed and the higher the porosity, the lower the wear rate. In filled-pore, self-lubricated conditions, the sample with the highest porosity showed the lowest wear rate. Reasons for this behaviour are discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Wear - Volumes 328â329, 15 April 2015, Pages 1-7
Journal: Wear - Volumes 328â329, 15 April 2015, Pages 1-7
نویسندگان
F. Martin, C. GarcÃa, Y. Blanco,