Hafnium Crucible

Hafnium Crucible Material Chemical Composition

Chemical Composition (%)
Hf+Zr	Zr	Si	Mo	Al	Ni	C	H	O	N
≥99.95	≤1	≤0.001	≤0.001	≤0.0005	≤0.005	≤0.003	≤0.001	≤0.015	≤0.003
Cu	Sn	Fe	Ti	Mn	Cr	Sb	Pb	Mg	Nb
≤0.0005	≤0.0005	≤0.01	≤0.001	≤0.0005	≤0.001	≤0.0005	≤0.0005	≤0.0005	≤0.0005

Straight Wall Hafnium Crucible Stock Dimensions

Item	Capacity (mL)	OD (mm)	H (mm)	WT (mm)
HM-Hf-5ml	5	25	17	2
HM-Hf-10ml	10	30	21	2
HM-Hf-15ml	15	34	23	2
HM-Hf-20ml	20	37	26	2
HM-Hf-25ml	25	39	27	2
HM-Hf-30ml	30	42	29	2
HM-Hf-35ml	35	44	30	2
HM-Hf-40ml	40	45	32	2
HM-Hf-45ml	45	47	33	2
HM-Hf-50ml	50	49	34	2
HM-Hf-55ml	55	50	35	2
HM-Hf-75ml	75	55	39	2
HM-Hf-80ml	80	58	40	3
HM-Hf-100ml	100	62	43	3
HM-Hf-250ml	250	82	58	3
HM-Hf-500ml	500	102	72	3
HM-Hf-1000ml	1000	127	90	3

Conical Shape Hafnium Crucible Stock Dimensions

Item	Capacity (mL)	TOD (mm)	BOD (mm)	H (mm)	WT (mm)
HM-Hf-C10ml	10	29	28	21	2
HM-Hf-C20ml	20	35	34	26	2
HM-Hf-C25ml	25	38	36	28	2
HM-Hf-C30ml	30	40	38	30	2
HM-Hf-C35ml	35	44	41	29	2
HM-Hf-C40ml	40	44	41	33	2
HM-Hf-C45ml	45	47	44	32	2
HM-Hf-C50ml	50	47	44	36	2
HM-Hf-C75ml	75	63	50	36	3
HM-Hf-C80ml	80	63	50	39	3
HM-Hf-C100ml	100	65	60	39	3
HM-Hf-C200ml	200	80	60	60	3
HM-Hf-C300ml	300	90	80	60	3

Hafnium Crucible Production Process

• Raw Material: Select high-purity hafnium powder.
• Powder Metallurgy: Mix with binder and compact into a green billet.
• Sintering: High-temperature sintering to remove the binder and increase density.
• Heat Treatment: Anneal to relieve stress and enhance properties.
• Surface Treatment: Clean and polish the surface.

Hafnium Crucible Surface Finish

Depending on the intended applications, hafnium crucibles have three main surface finishes as follows:

• Black: The surface is “as swaged” or “as drawn”, retaining a coating of processing lubricants and oxides.
• Cleaned: The surface is chemically cleaned to remove all lubricants and oxides.
• Ground: The surface is centerless to remove all coating and achieve precise dimensions control.

Hafnium Crucible Safety Precautions For Use

1. After use, store the hafnium crucible in a dry place to prevent rainwater intrusion. Before use, gradually heat it to 500°C.
2. Add materials according to the crucible’s capacity, avoiding overpacking to prevent cracking from the thermal expansion of the metal.
3. When removing the metal solution, use a scoop rather than calipers. If calipers or other tools are necessary, ensure they match the shape of the crucible to prevent localized pressure that could shorten its lifespan.
4. The crucible’s service life depends on usage. Avoid direct exposure to an oxidizing flame, as this can cause oxidation of the crucible material, leading to premature wear.

Hafnium Crucible Applications

• High-temperature Melting: Hafnium crucibles have extremely high melting points and excellent high-temperature resistance, making them suitable for melting metals and alloys of high melting points.
• Semiconductor Manufacturing: Hafnium crucibles are used in the semiconductor industry to prepare high-purity semiconductor materials such as silicon and gallium arsenide.
• Nuclear Industry: Hafnium crucibles are used in reactors to process and melt nuclear materials.
• Chemical Reaction Vessels: Hafnium crucibles are commonly used in chemical reactions that require resistance to strong acids and bases.

Hafnium Crucible Packaging

The Hafnium Crucible is carefully placed in wooden cases or cartons with additional support from soft materials to prevent any shifting during transportation. This packaging method guarantees the integrity of the products throughout the delivery process.