고 합금 내 입력 금속: 고온과 부식에 저항합니다

고 합금 내 입력 금속: 고온과 부식에 저항합니다

개요

Corrosion-resistant metals are widely used in industries like cooking, 항공 우주, 그리고 에너지. 이 금속은 구조적 강도를 제공합니다., 내열성, 부식에 대한 탁월한 보호 기능. 다음은 일반적인 내마모성 금속과 그 특성에 대한 분석입니다..

1. 스테인레스 스틸

Stainless steel is a group of alloys with varying corrosion resistance. A thin chromium oxide layer forms on the surface, enhancing protection.

Categories of Stainless Steel

• Austenitic Stainless Steel
  • Known as the 300 시리즈 (예를 들어, 304, 316).
  • Contains ~18% chromium and 8% 니켈.
  • 316 is the most corrosion-resistant.
  • Commonly used in industrial applications.
• Martensitic Stainless Steel
  • Part of the 400 시리즈 (예를 들어, 420에이).
  • Higher carbon content increases hardness but reduces corrosion resistance compared to the 300 시리즈.
• Ferritic Stainless Steel
  • Also part of the 400 시리즈 (예를 들어, 430에이).
  • 까지 27% chromium provides elasticity; low carbon enhances strength.

듀플렉스 스테인레스 스틸

Duplex steels combine ferrite and austenite phases for high strength and corrosion resistance. 일반적인 등급은 다음과 같습니다:

• 2205 (22% 크롬, 5% 니켈, 3% 몰리브덴).
• S32750 (25% 크롬, 7% 니켈, 4% 몰리브덴).

2. High-Temperature Alloys

These alloys are designed for strength and corrosion resistance under extreme heat, often used in aerospace and energy industries.

Types of High-Temperature Alloys

• Nickel Superalloys: 강한, 부식 방지, and cost-effective.
• Cobalt Superalloys: Resistant to high temperatures and hot corrosion.
• Iron Superalloys: Affordable, 강한, and corrosion-resistant.

3. 알류미늄

Aluminum forms a protective oxide layer, making it corrosion-resistant. 하지만, resistance varies across grades.

Corrosion-Resistant Aluminum Grades

• 1xxx Series: 99% pure aluminum; excellent corrosion resistance in normal environments.
• 3xxx Series: Manganese-alloyed; ductile and suitable for cold-forming applications.
• 5xxx Series: Magnesium-alloyed; strong and resistant to similar environments as 3xxx.

4. Copper Alloys

Copper alloys are corrosion-resistant and often used to enhance the properties of other metals.

Common Copper Alloys

• Bronze: Copper-tin alloy; resists seawater corrosion.
• Brass: Copper-zinc alloy; adding tin improves corrosion resistance, while more zinc reduces it.

5. 티탄

Titanium is lightweight, 강한, and corrosion-resistant. A passive oxide layer protects it and quickly reforms if damaged.

주요 기능

• Resistant to chlorine solutions.
• Commonly used in chemical applications, such as the chlor-alkali industry.