- Chromizing is a type of metallurgical process that involves diffusion of a single or several elements within a base material.
- The process is mainly composed of saturating through diffusion of predominantly steel or ferrous alloys with chromium.
- It is performed to prolong the lifespan of components and tools that are often exposed to corrosion and wear, like in cases of gas corrosion at temperatures higher than 900°C.
- Chromizing is also reliable in providing resistance to sulfidation and oxidation attacks. In fact, it exceeds many other available protection methods.
- A surface rich in chromium is highly immune to many issues that afflict other forms of protective systems, like spailing and debailing as seen in many coating forms.
- A chrome layer is non-porous and prone to flaking as well as thermal fatigue.
- The impressive qualities of chromium are achieved through the metallurgical bond that exists between substrates metal and diffused chromium.
- This gives the best protection despite mechanical, electrochemical and chemical impact.
- Having this process coating applied will yield the best corrosion and wear protection to various components.
- There are two types of chromizing:
- Anti-corrosion chromizing
- Surface hardening.
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