Rare Duniya Farashin Magnet Trends (250318)

Kasuwar Tabo ta China - Rare Duniya Abubuwan Magnet Abubuwan Magana Kullum, Kawai don Magana!

▌ Hoton Kasuwa

Pr-Nd Alloy

• Range na Yanzu: 543,000 - 547,000
• Farashin Trend: Tsaya tare da kunkuntar sauye-sauye

Dy-Fe Alloy

• Range na Yanzu: 1,630,000 - 1,650,000
• Farashin TrendBuƙatu mai ƙarfi yana goyan bayan haɓakar haɓakawa

Magnets masu haɓakawa a cikin MRI: Daidaitawa & Innovation (chars 598)
Na'urorin daukar hoto na MRI na zamani sun dogara da niobium-titanium (NbTi) naɗaɗɗen na'urorin da aka sanyaya ta hanyar helium na ruwa don samar da filayen 1.5-7T. Mahimman ci gaba:

• Halin yanayi: Ƙirar wuta mai aiki daidai ≤0.5ppm taswirar taswirar B₀ na ainihi (TR=2ms)
• Gudanar da Quench: Multi-mataki matsa lamba bawul bawul watsar da 15MJ makamashi a cikin 0.3s yayin da nada gazawar.
• CryogenicsClose-cycle cryocoolers suna kula da 4.2K tare da <10⁻⁶ W / ㎡ yaywar thermal

Ma'auni na ayyuka:

• Nb₃Sn coilsCimma 21T @ 15K (Brookhaven Lab 2024), yana ba da damar babban filin MRI
• Sifili-tafasa tsarin: Ajiye helium 1500L na tsawon shekaru 10+ ta hanyar firiji na Magnetic (Fasaha na NASA)
• Hoto na AI: Zurfafa ilmantarwa sake gina 0.5mm切片图像 daga 50% raw bayanai (缩短扫描时间42%)

Shari'ar masana'antu: Siemens' 7T Terra tsarin yana rage amo zuwa 85dB (vs. 110dB常规MRI) ta hanyar sokewar rawar jiki, haɓaka ta'aziyyar haƙuri.