【Daily Question】12.19 Fill-in-the-blank questions on hydrogen corrosion (3 wealth points for a reply; +3 to –8 wealth points for a correct answer)

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This post was last edited by lzy4225925 on 2015-12-20 09:26. The topic content: Hydrogen corrosion includes ( ), ( ), ( ). Hydrogen bulging, hydrogen embrittlement, hydrogen erosion – Requirements and hints for answering questions. Hint: 1. Hydrogen atoms diffuse into the voids within steel and combine there to form hydrogen molecules; since these hydrogen molecules cannot diffuse, they accumulate and create high internal pressures, leading to bulging or even cracking of the steel surface. 2. In high-strength steel, the metal lattice is highly deformed; when hydrogen atoms enter the metal, they increase the lattice strain, thereby reducing toughness and ductility and causing embrittlement. 3. Under high temperature and pressure conditions, hydrogen enters the metal and reacts chemically with a certain component or element, thereby causing damage to the metal. Please note: We will close this post after 24 hours, and at that time we will announce the best reply (the best assistance), as well as the answer and explanation. Other details: Recruitment for moderators & technicians in the [Mechanical Zone] – applications and referrals are welcome. 【Valid indefinitely】【If you’re interested, come ahead!】 】(Click to enter) 【Mechanical Zone】Comprehensive guide to preventing equipment freezing over the winter 【Mechanical Zone】Call for collection of essential knowledge 【Seeking manufacturer sponsors】(Ongoing campaign) 【Rewards for recommending valuable content; the “Active Users and Weekly Stars” competition in the Mechanical Zone has begun】