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不锈钢光亮退火据美国《专利公报》报道,美国实验成功一种不锈钢光退火新工艺,并获得了专利权,专利号为№4744837。为了防止含铬不锈钢表面形成氧化铬薄膜,在钢中加入能抑制形成氧化铬膜的合金元素,并形成这种抑制元素的氧化层,或者采用表面气相沉积方法形成抑制元素的氧化层。在氮和氢中退火时,这种无铬的氧化层也能阻止氮向试样中扩散。作为抑制元素,可以用Si、Ti、Al、Nb、Ta、B、Zr、Y、V、Mn等元素,并可以用任何方法加入。在退火时间内,在保证
According to the United States “Patent Gazette” reported that the United States successfully experiment a stainless steel optical annealing new technology, and obtained a patent, patent number № 47,448,337. In order to prevent the formation of a chromium oxide film on the surface of a chromium-containing stainless steel, an alloying element that suppresses the formation of a chromium oxide film is added to the steel to form an oxide layer of such a suppressing element or an oxide layer of a suppressing element is formed by surface vapor deposition. This chromium-free oxide layer also prevents nitrogen from diffusing into the sample when annealed in nitrogen and hydrogen. As the suppression element, elements such as Si, Ti, Al, Nb, Ta, B, Zr, Y, V and Mn may be used and may be added by any method. In the annealing time, the guarantee