Skip to main content

and
  1. No Access

    Article

    Atomic force microscopy study of nanoindentation deformation and indentation size effect in MgO crystals

    The dependences of various nanoindentation parameters, such as depth of penetration d, indentation diameter a, deformation zone radius R, and height h of hills piled up around indents, on applied load were invest...

    K. Sangwal, P. Gorostiza, J. Servat, F. Sanz in Journal of Materials Research (1999)

  2. No Access

    Article

    Study of growth dislocations in L-arginine phosphate monohydrate single crystals by chemical etching

    The results of a study of the distribution of growth dislocations revealed on different faces of L-arginine phosphate monohydrate (LAP) crystals by selective etching in relation to the growth conditions of the...

    K. Sangwal, S. Veintemillas-Verdaguer, J. Torrent-Burgués in Journal of Materials Science (1996)

  3. No Access

    Article

    Occurrence of various planes in contact with the bottom of crystallizers during the growth of potassium bichromate crystals from aqueous solutions

    K. Sangwal, M. Szurgot in Journal of Materials Science Letters (1992)

  4. No Access

    Article

    Selective etching of rough (001) faces of KH2PO4 crystals

    I. Owczarek, K. Sangwal in Journal of Materials Science Letters (1990)

  5. No Access

    Article

    Microhardness of as-grown and annealed lead sulphide crystals

    The results of the measurement of Vickers microhardness of {100} faces of synthetic lead sulphide crystals are reported. It was found that, for loads lower than ∼60g, the microhardness value depends on the app...

    K. Sangwal in Journal of Materials Science (1989)

  6. No Access

    Article

    Surface micromorphology and dissolution kinetics of potassium dihydrogen phosphate (KDP) crystals in undersaturated aqueous solutions

    The results of dissolution kinetics and surface micromorphology of (010) and (011) faces of potassium dihydrogen phosphate (KDP) crystals etched in undersaturated aqueous solutions are described. They are then...

    A. Koziejowska, K. Sangwal in Journal of Materials Science (1988)

  7. No Access

    Article

    Influence of impurity on the etching of caesium iodide crystals

    A. Koziejowska, K. Sangwal in Journal of Materials Science Letters (1986)

  8. No Access

    Article

    Influence of impurities on the etching of NaCl crystals

    The effect of CdCl2, CuCl2·2H2O, MnCl2·4H2O and FeCl3·6H2O impurities and undersaturation on the rates of macroscopic dissolution,v p, lateral etching away from a dislocation line,v t, and normal etching along th...

    K. Sangwal, G. Zaniewska in Journal of Materials Science (1984)

  9. No Access

    Article

    Dissolution kinetics of MgO crystals in aqueous acidic salt solutions

    The revelation and morphology of dislocation etch pits as well as the rates of macroscopic dissolution and selective etching on the {1 0 0} plane of MgO crystals in aqueous solutions of various inorganic salts...

    K. Sangwal in Journal of Materials Science (1982)

  10. No Access

    Article

    On the morphology of dislocation etch-pits on cube faces of MgO in acids

    B. Borecka, K. Sangwal in Journal of Materials Science Letters (1982)

  11. No Access

    Article

    Dislocation etch pit formation on non-metallic crystals

    Experimental results available in the literature on selective etch pit formation on non-metallic crystals (excluding semiconductors) are discussed against the background of thermodynamic and topochemical adsor...

    K. Sangwal in Journal of Materials Science (1982)

  12. No Access

    Article

    A note on the dissolution mechanism of MgO crystals in acids

    K. Sangwal, K. Ramakrishna Rao in Journal of Materials Science (1980)

  13. No Access

    Article

    On the adsorption processes in the selective etching of MgO and CaF2 crystals

    K. Sangwal in Journal of Materials Science (1980)

  14. No Access

    Article

    On the adsorption processes in the selective etching of MgO and CaF2 crystals

    K. Sangwal in Journal of Materials Science (1980)

  15. No Access

    Article

    Mechanism of dissolution of MgO crystals in acids

    A simple model of dissolution of MgO crystals in acids involving chemical reactions and adsorption process on the crystal surface is used to derive expressions connecting rates of surface dissolution and selec...

    K. Sangwal in Journal of Materials Science (1980)

  16. No Access

    Article

    On the kinetics and mechanism of dissolution of MgO crystals

    The kinetics of dissolution of {1 0 0}, {1 1 0} and{1 1 1} surfaces of MgO crystals have been investigated in H2SO4 and H3PO4. It is observed that in concentrated H2SO4 and in concentrated and dilute H3PO4, the e...

    K. Sangwal, T. C. Patel, M. D. Kotak in Journal of Materials Science (1979)

  17. No Access

    Article

    Chemical etchants to reveal old and fresh dislocations in MgO crystals

    K. Sangwal, T. C. Patel, M. D. Kotak in Journal of Materials Science (1979)

  18. No Access

    Article

    Etching of MgO crystals in acids: kinetics and mechanism of dissolution

    Kinetics of etching of MgO crystals have been studied in H2SO4, HNO3 and HCl. The effects of etching time, acid concentration and temperature on the growth of hillocks, on the selective etch rate and on the rate ...

    K. Sangwal, S. K. Arora in Journal of Materials Science (1978)

  19. No Access

    Article

    Etching of MgO crystals in acids: surface micromorphology

    Several etchants based on simple acids are proposed for revealing dislocations on {100}, {110} and {111} faces of MgO single crystals. Some acids under different etching conditions are shown to produce etch py...

    K. Sangwal, J. N. Sutaria in Journal of Materials Science (1976)