POLYCRYSTALLINE DIAMOND CONSTRUCTIONS & METHODS OF MAKING SAME

• Main Authors: AMBURY, Rachael Fiona, SPITS, Raymond Anthony, FARAG, Sebastian, NILEN, Roger William Nigel, KONYASHIN, Igor Yurievich
• Format: Patent
• Language: English; French
• Published: 08.07.2021
• Subjects: ALLOYS; CASTING; CHEMISTRY; EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FERROUS OR NON-FERROUS ALLOYS; FIXED CONSTRUCTIONS; GRINDING; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METALLURGY; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; PERFORMING OPERATIONS; POLISHING; POWDER METALLURGY; TOOLS FOR GRINDING, BUFFING, OR SHARPENING; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WORKING METALLIC POWDER

A polycrystalline diamond construction has a body of polycrystalline diamond (PCD) material; and a cemented carbide substrate bonded to the body of polycrystalline material along an interface. The cemented carbide substrate has tungsten carbide particles bonded together by a binder material, the binder material comprising Co; and the tungsten carbide particles form at least around 70 weight percent and at most around 95 weight percent of the substrate. The cemented carbide substrate has a bulk volume, the bulk volume of the cemented carbide substrate having at least around 0.1 vol.% of inclusions of free carbon having a largest average size in any one or more dimensions of less than around 40 microns. La présente invention concerne une construction de diamant polycristallin comprenant un corps de matériau de type diamant polycristallin (PCD) ; et un substrat en carbure cémenté lié au corps de matériau polycristallin le long d'une interface. Le substrat en carbure cémenté a des particules de carbure de tungstène liées ensemble par un matériau liant, le matériau liant comprenant du Co ; et les particules de carbure de tungstène formant au moins environ 70 pour cent en poids et au plus environ 95 pour cent en poids du substrat. Le substrat en carbure cémenté a un volume apparent, le volume apparent du substrat en carbure cémenté a au moins environ 0,1 % en volume d'inclusions de carbone libre ayant une taille moyenne la plus grande dans une ou plusieurs dimensions inférieures à environ 40 microns.