Molybdenum lanthanum alloy properties: Apa bedane antarane molybdenum lanthanum (Mo-La) alloy lan TZM molybdenum alloy?

What is the difference between molybdenum lanthanum (Mo-La) alloy and TZM molybdenum alloy?

Apa paduan molybdenum-lanthanum? Paduan molybdenum-lanthanum minangka paduan sing kasusun saka molibdenum logam dasar lan lanthanum trioksida sing ana minangka partikel sing disebar ing matriks. Isi La2O3 ing campuran umume 0.5% ~ 5.0% (fraksi massa). Kanggo

Liwat riset ing kinerja suhu dhuwur lan struktur cocog saka molybdenum-lanthanum alloy lan TZM alloy ing 1000 ~ 1800 ℃. Asil nuduhake yen suhu luwih murah tinimbang 1400 ℃, campuran molybdenum-lanthanum nduweni kinerja komprehensif sing luwih dhuwur saka kekuatan lan plastisitas. Nalika suhu luwih saka utawa padha karo 1400 ℃, kekuatan tensile saka alloy molybdenum-lanthanum sudo, lan plasticity saka alloy molybdenum-lanthanum uga sudo. Kanthi kenaikan suhu tes, kekuatan tarik saka paduan TZM mudhun, nanging plastisitas saka paduan molybdenum TZM mundhak, sing persis ngelawan saka paduan molybdenum-lanthanum.

Ing wektu sing padha, apa kekuatan utawa plastisitas, TZM alloy dibandhingake karo molybdenum-lanthanum alloy ing suhu sing padha. Pengamatan microstructure nuduhake yen loro wesi molybdenum iki wiwit recrystallize ing 1100 ℃ lan terus kanggo 1550 ℃, lan pari-parian recrystallized nuduhake struktur elongated, kang beda karo pari-parian equiaxed ing negara recrystallized saka molybdenum murni.

1. Pambuka kanggo molybdenum lanthanum alloy

Molybdenum lanthanum alloy, uga dikenal minangka molybdenum suhu dhuwur, account MoLa, digawe saka molybdenum doped karo jumlah cilik saka lanthanum trioxide (La2O3) partikel kanggo mbentuk dadi-disebut struktur serat laminated. Struktur mikro khusus iki bisa tetep stabil sanajan ing suhu nganti 2000°C. Mulane, molybdenum-lanthanum oxide nduweni resistance creep sanajan ing kondisi panggunaan sing ekstrim. We utamané proses wesi molybdenum kuwi menyang bagean tungku suhu dhuwur, kayata tameng panas tungku vakum, sintering lan annealing prau, kabel terdampar utawa kumparan evaporator.

2. Advantages of molybdenum lanthanum alloy:

Higher recrystallization temperature;

Struktur partikel elongated bisa nambah daktilitas;

Stronger oxidation resistance;

Higher creep resistance.

3. Recrystallization suhu: 1400 ℃ ~ 1500 ℃.

4. Resistivitas paduan molibdenum-lanthanum (unit: Ω*mm2/m)

temperature℃	20	600	1000	1200	1400	1700	1800	1900	2000
resistivity	0.054	0.205	0.314	0.374	0.435	0.506	0.525	0.558	0.571

5. Komposisi paduan molibdenum lanthanum

grade	main ingredient%					(no greater than%)
grade	Mo	Ti	Zr	C	La2O3	C	0	N	Fe	Ni	Si
Mo1	wates	–	–	–	–	0.01	0.007	0.002	0.01	0.002	0.01
TZM	wates	0.40 ~ 0.55	0.06 ~ 0.12	0.01 ~ 0.04	–	–	0.03	0.002	0.01	0.005	0.005
MoLa	wates	–	–	–	0.4 ~ 1.2	0.01	–	0.002	0.01	0.002	0.01

6, Rekomendasi beban lumahing saka molibdenum-lanthanum alloy: 4 ~ 9W/cm2