Superabrasive boride and a method of preparing the same by mechanical alloying and hot pressing

A ceramic material which is an orthorhombic boride of the general formula: AlMgB14:X, with X being a doping agent. The ceramic is a superabrasive, and in most instances provides a hardness of 40 GPa or greater

Among all these tundras [Exhibition catalogue]

Among All These Tundras, September 18 to December 7, 2019. Onsite Gallery, 199 Richmond St. W. Toronto, ON, M5V 0H

'Arke-Typical' : Dialogues in Art, Anthropology and the Writing of Self in the Work of Pia Arke

This research project approaches the topic of autoethnography in art through an analysis of the artistic practice of the late Greenlandic-Inuit and Danish artist and photographer, Pia Arke (1958-2007). Arke’s artistic-research practice is a personal and critical relationship to Greenland’s colonial history, Danish imperialism and Arctic Indigenous representation. Her critiques are foregrounded in biographical expressions and critical reflections that reframe colonial histories and narratives, bringing them into visible and tangible contact with Greenlandic Inuit oral and material histories. Pia Arke’s writing and performances challenge dominant discourses of the ‘ethnographic turn’ by art scholars concerned with issues such as, appropriation in art, ‘relational aesthetics’, social collaboration and site-specificity; themes that, although relevant, tend to obscure important decolonizing methods and postcolonial insights in the art historical literature. Pia Arke’s autoethnographic framings foreground notions of identity, ethnicity, hybridity, and self-representation as crucial postcolonial sites in formation. Arke’s artistic devices, mediums and narrative contents draw on the history of ethnographic histories as she explores critical colonial and postcolonial themes. This critical stance is an integral part of the project in which she seeks to interrogate and thus requalify the “ethnographic gaze,” imbuing it with new meaning. Arke’s performative gestures produced new visual configurations and representations that can be read and understood as plurally embodied autoethnographic articulations in reclaiming (self) identity. Her mixed “mongrel” autoethnographic orientations, especially as clarified in her practice, are largely informed by the multivalency of ethnoaesthetics, as a web of meanings and contestations deriving from ethnographic practices, issues of race and identity, postcoloniality, and the politics of indigeneity. Her theoretical outlook is thus meaningfully extended into different intellectual fields, especially as they are closely linked with praxis—this linkage is indispensable in constructing and narrating an essential autoethnographic project. Keywords: Greenland, Arctic colonialism, decolonization, postcoloniality, critical theory, methodologies, ethnicity, identity, autoethnography, artistic-research, ethnographic turn, ethnoaesthetic

Ceramic comprising an orthorhombic aluminum magnesium boride of formula: almgb14:x, wherein x is a doping agent present in from 5 to 30 weight % selected from group iii, iv, and v elements; extreme hardness; wear resistant coatings

A ceramic material which is an orthorhombic boride of the general formula: AlMgB14 :X, with X being a doping agent. The ceramic is a superabrasive, and in most instances provides a hardness of 40 GPa or greater

Pb-Free Sn-Ag-Cu-Mn Solder

A solder alloy comprises Sn, Ag, Cu, and Mn and has a melting temperature of about 211 degrees C. A solder joint and solder process embody the solder alloy as well as solder balls and solder paste made therefrom to provide a solidified joint that includes three different intermetallic phases and a Sn metal phase. An exemplary Sn—Ag—Cu—Mn alloy consists essentially of about 3 to about 4 weight % Ag, about 0.80 to about 1.0 weight % Cu, and about 0.05 to about 0.15 weight % Mn, and balance consisting essentially of Sn

The ductile binder phase, a cobalt-manganese alloy, is used in appropriate quantities to tailor good hardness and reasonable fracture toughness for hard materials so they can be used suitably in industrial machining and grinding applications

This invention relates to a ductile binder phase for use with AlMgB14 and other hard materials. The ductile binder phase, a cobalt-manganese alloy, is used in appropriate quantities to tailor good hardness and reasonable fracture toughness for hard materials so they can be used suitably in industrial machining and grinding applications

Wear-resistant boride composites with high percentage of reinforcement phase

A highly wear resistant sintered, hot pressed, or otherwise compacted ceramic composite material is described, consisting of two discrete phases of the form AlxMgyB14 where x and y ≦1 or like hard, orthorhombic compounds, and TiB2 or like Group IVB transition metal di-borides, and with an unexpectedly high contentof transition metal di-boride in the range from 40 to 90 percent (28 to 85 volume percent)

Ultra-hard boride-based metal matrix reinforcement

A composite of M/AlMgB14 or M alloy/AlMgB14 is synthesized, where M=Al, Ti, W, or Cu. Small particles and/or fibers of AlMgB14 are distributed throughout a metal matrix to strengthen the resulting composite