- 
                        
                        Keywords"various materials",total 
                            1 records
                        
                        
 - 
                            crucible melting various materials in nitrogen atmosphere
                            
                            
                            Objective Heat to melting point various materials in a nitrogen atmosphere in a graphite or molybdenum crucible.Material Magnesium fluoride, tantalum pentoxide, aluminum, yttrium fluoride, germanium, hafnium or titanium dioxide and a Pyrex bell jar Temper…
 





