چهارشنبه, 15 فروردين 1397 ساعت 08:02

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انتخاب ماده برای مقاومت به خوردگی

بعلت ارزانی و خواص مکانیکی سودمند فولادهای کربنی و چدن‌ها دامنه‌ی کاربرد این فلزات بسیار وسیع است. مقاومت به خوردگی این مواد به جز در مقابل اسید سولفوریک غلیظ و قلیاها متوسط است. فولادهای زنگ نزن دسته ای از مواد بسیار مقاوم به خوردگی هستند و کاربردهای زیادی در مهندسی دارند.البته باید خاطر نشان ساخت که این فولادها در مقابل کلیه‌ی محیط‌های خورنده مقاوم نیستند. در محیط‌های حاوی کلر، قطعات زنگ نزن تحت تنش حتی از فولادهای ساختمانی مقاومت به خوردگی کمتری دارند. در صورتی که فولادهای زنگ نزن درست ساخته نشده و عملیات حرارتی مناسب رویشان انجام نشود در معرض خوردگی‌ بین دانه‌ای، بروز ترک در محیط خوردنده و تحت تنش (scc)، شیاردار شدن و حفره دار شدن شدیدتر هستند.

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بازدید 99535 بار آخرین ویرایش در پنج شنبه, 16 فروردين 1397 ساعت 06:06
محتوای بیشتر در این بخش: « فولادهای زنگ نزن

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