Glossary of technical terms for the use of metallurgical engineers Terms starting with alphabet ‘P’ P2 etch – It uses ferric sulphate (FeSO4) in place of the toxic sodium dichromate as the oxidizer (15 % ferric sulphate, 37 % sulphuric acid (H2SO4). and 48 % water and produces an oxide with a similar morphology to those got using the different chromic-sulphuric etches. The …
Read MoreGlossary of technical terms for the use of metallurgical engineers Terms starting with alphabet ‘O’ Object – It refers to a physical entity which can be seen or touched. It is something which receives action. Object attribute – It is a named property or characteristic which describes a specific feature or piece of data of an object. …
Read MoreGlossary of technical terms for the use of metallurgical engineers Terms starting with alphabet ‘N’ Nabarro–Herring creep (NH creep) – It is a mechanism of deformation of crystalline materials (and amorphous materials) which occurs at low stresses and held at high temperatures in fine-grained materials. In Nabarro–Herring creep, atoms diffuse through the crystals, and the rate of creep varies inversely with the …
Read MoreGlossary of technical terms for the use of metallurgical engineers Terms starting with alphabet ‘M’ Maceral -It is a component, organic in origin, of coal or oil shale. The term ‘maceral’ in reference to coal is analogous to the use of the term ‘mineral’ in reference to igneous or metamorphic rocks. Examples of macerals are …
Read MoreGlossary of technical terms for the use of metallurgical engineers Terms starting with alphabet ‘L L1 loss – It is also known as ‘mean absolute error’ (MAE). It is a loss function used in regression tasks which calculates the average absolute differences between predicted values from a machine learning model and the actual target values. L1 …
Read MoreGlossary of technical terms for the use of metallurgical engineers Terms starting with alphabet ‘K’ Ka-band – It refers to a high-frequency microwave range (roughly 27 giga-hertz to 40 giga-hertz) of the electro-magnetic spectrum, known for enabling high-bandwidth, high-data-rate applications like satellite internet, mobile broadband, and high-resolution radar, though its shorter wave-lengths make it more susceptible to …
Read MoreGlossary of technical terms for the use of metallurgical engineers Terms starting with alphabet ‘J’ J2-flow theory – It is also called von Mises plasticity. It is a widely used model in engineering for ductile materials (like metals) that predicts when yielding (permanent deformation) begins under complex loading, based on the principle that yielding occurs …
Read MoreGlossary of technical terms for the use of metallurgical engineers Terms starting with alphabet ‘I’ IACS – It means ‘International annealed copper standard is a measure of electrical conductivity agreed in 1913 with ‘pure’ copper set as 100 %. Advances in copper refining mean that now the pure Copper can attain 103 % IACS. The …
Read MoreGlossary of technical terms for the use of metallurgical engineers Terms starting with alphabet ‘H’ Habitat – It means the natural home of a living organism. The three components of wildlife habitat are food, water, and shelter. Habit plane – It is the plane or system of planes of a crystalline phase along which some …
Read MoreGlossary of technical terms for the use of metallurgical engineers Terms starting with alphabet ‘G’ Gabbro – It is a dark, coarse-grained igneous rock. Gable – It is the normally triangular portion of a wall between the edges of intersecting roof pitches. The shape of the gable and how it is detailed depends on the structural system …
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